Hinge



(No Model.)

A. M. GRANGER.

' HINGE.

No. 517,857. Patented Apr. 10, 1894.

INVENTOR WITNESSES:

ofzw wm ATT RNEY.

UNITED STATES PATENT OFFICE.

ALVINZA M. GRANGER, OF GRAND RAPIDS, MICHIGAN.

HINGE.

SPECIFICATION forming part of Letters Patent No. 517,857, dated April 10, 1894. Application filedlTnne 23, 1893. Serial No- 4'78,634. (No model.)

To all whom it may concern:

Be it known thatI, ALVINZA M. GRANGER, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Hinges; and I do herebydeclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in hinges for doors, &c., and its object is to provide the same with certain new'and useful features, hereinafter more fully described and particularly pointed out in the claim, reference being had to the accompanying drawings in which- Figure '1 is a plan view of my device in place, showing-a portion of the door and casing. Fig. 2 is the same showing a modified construction of the same; Fig. 3 a vertical section on the line 3-3 of ,Fig. 1. Fig. 4. is a side elevation and plan view of the under side of the hinge, shown in Fig. 1; and Fig. 2 is the same showing the hinge shown in Like letters refer to like parts in all of the figures.

A is a portion of the door casing, and A a portion of the door.

B, B, are the two halves of the hinge plate,

having a hinge joint O.v These plates B, B,

taken together form a disk, hinged on a line passing through its center. The advantage of this construction is obvious. I am able to seat my hinge by means of a center-bit.

Fig. 2 shows a construction where a long hinge is required and the plate may have two or more circular parts, the line of the peripheries of which, if continued, would overlap each other a short distance, and are thus joined together. In seating this form of hinge, the center-bit is centered at each time a lesser distance from the former center, than the diameter of the bit, thus overlapping or cutting into the former out each time. At

each end and on the under side of the plates B, B, are secured the rods, or ribs D, D. These ribs may. have narrow necks connecting them to the plate, or lie directly against it, and are preferably round to fit a hole bored by a bit. For convenience and cheapness one-pair may be omitted and the pair used centrally located across the plate.

To place and secure the hinge in position, the'door is first put in place, and then with a center-bit a cut to receive the plate B, B, is made in both door'and casing; holes to receive the round portion of the ribs D are bored in the door and easing respectively, at

.a suitable distance from the bottom of the hinge seat, and in a parallel plane, the timber is then cut away between the hinge seat and the hole sufficiently to receive the neck of'the rib, and the hinge driveninto place. By this construction the timber embraces the rib at each side of the neck, connecting the plate with the rib, and firmly secures the hinge to its seat. The under sides of the ribs D are roughened, corrugated, or barbed as at D, which prevents them from slipping from the holes, and if desired glue or cement may also be used.

This device for fastening hinges may be used with or without the discous form of plate, and will operate equally as well where the hinge is not let into the door or casing.

What I claim is In combination with a hinge having flat plates pivoted to each other at their adjacent edges, ribs arranged parallel to said plates and connected to the inner surface of the same by narrow necks, and adapted to engage openings in the door and casing, and secure said hinge thereto, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

ALVINZA M. GRANGER.

Witnesses:

LUTHER V. MOULTON, LOIS MouL'roN. 

